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EP1434941B1 - Fuel injection valve - Google Patents

Fuel injection valve Download PDF

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Publication number
EP1434941B1
EP1434941B1 EP02800535A EP02800535A EP1434941B1 EP 1434941 B1 EP1434941 B1 EP 1434941B1 EP 02800535 A EP02800535 A EP 02800535A EP 02800535 A EP02800535 A EP 02800535A EP 1434941 B1 EP1434941 B1 EP 1434941B1
Authority
EP
European Patent Office
Prior art keywords
valve
fuel injection
groove
injection valve
fuel
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Lifetime
Application number
EP02800535A
Other languages
German (de)
French (fr)
Other versions
EP1434941A1 (en
Inventor
Günter DANTES
Detlef Nowak
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Robert Bosch GmbH
Original Assignee
Robert Bosch GmbH
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Filing date
Publication date
Application filed by Robert Bosch GmbH filed Critical Robert Bosch GmbH
Publication of EP1434941A1 publication Critical patent/EP1434941A1/en
Application granted granted Critical
Publication of EP1434941B1 publication Critical patent/EP1434941B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/18—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for
    • F02M61/1806—Injection nozzles, e.g. having valve seats; Details of valve member seated ends, not otherwise provided for characterised by the arrangement of discharge orifices, e.g. orientation or size
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M51/00—Fuel-injection apparatus characterised by being operated electrically
    • F02M51/06—Injectors peculiar thereto with means directly operating the valve needle
    • F02M51/061—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means
    • F02M51/0625—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures
    • F02M51/0664—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding
    • F02M51/0685—Injectors peculiar thereto with means directly operating the valve needle using electromagnetic operating means characterised by arrangement of mobile armatures having a cylindrically or partly cylindrically shaped armature, e.g. entering the winding; having a plate-shaped or undulated armature entering the winding the armature and the valve being allowed to move relatively to each other or not being attached to each other
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M61/00—Fuel-injectors not provided for in groups F02M39/00 - F02M57/00 or F02M67/00
    • F02M61/16—Details not provided for in, or of interest apart from, the apparatus of groups F02M61/02 - F02M61/14
    • F02M61/162—Means to impart a whirling motion to fuel upstream or near discharging orifices
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02M—SUPPLYING COMBUSTION ENGINES IN GENERAL WITH COMBUSTIBLE MIXTURES OR CONSTITUENTS THEREOF
    • F02M2200/00—Details of fuel-injection apparatus, not otherwise provided for
    • F02M2200/30—Fuel-injection apparatus having mechanical parts, the movement of which is damped
    • F02M2200/306—Fuel-injection apparatus having mechanical parts, the movement of which is damped using mechanical means

Definitions

  • the invention is based on a fuel injection valve according to the preamble of claim 1.
  • a Fuel injector includes the fuel in one combustion chamber formed by a piston / cylinder construction injected, and with a protruding into the combustion chamber Spark plug is provided.
  • the fuel injection valve is with at least one row over the circumference of the Fuel injector arranged distributed Spray openings provided. Through a targeted injection of fuel over the spray orifices becomes one beam-guided combustion process by forming a Mixture cloud realized with at least one jet.
  • a disadvantage of the above-mentioned document known fuel injection valve is in particular the Coking of the ejection openings, which thereby clog and the flow through the fuel injector diminish impermissibly. This leads to malfunctions the internal combustion engine.
  • DE 199 11 928 A1 shows an injection valve for a Internal combustion engine.
  • the fuel injector has a valve body, injection ports and a Fuel storage on the downstream side of a Pin section of the valve body.
  • An opening on the Outside of the injection hole has a width, the is generally larger than a width thereof, with the Width of the injection opening decreases gradually inwards, so that the fuel in the direction of the width with a predetermined angle is injected.
  • the vastness of Injection opening in the direction of injection of the fuel within the predetermined angle in the width direction is essentially uniform.
  • Through holes are on the middle section or on the sides in the Width direction of the injection port formed. The Through holes are connected to the fuel storage is and has a width that is greater than the width the injection port.
  • the fuel injection valve according to the invention with the Features of claim 1 has In contrast, the advantage that at one of the combustion chamber of Internal combustion engine facing front side of Valve seat body of the fuel injection valve a groove-like surface structure is formed, which prevents fuel in the area of Abspritzö Maschinenen can knock down, causing a zu186 the ejection openings avoided by coking residues becomes.
  • the number of grooves is arbitrary and of a single groove, which of a Any injection opening emanates, up to a number may increase, which is equal to the number of Spray openings is.
  • the groove-like surface structure produced simultaneously with the valve seat body or be subsequently introduced into this is advantageousously, the groove-like surface structure produced simultaneously with the valve seat body or be subsequently introduced into this.
  • the groove-like Surface structure in a simple and cost-effective manner by mechanical processing, such as. B. turning, or by chemical treatment, such as. As etching, can be produced is.
  • Fig. 1 shows in an excerpted sectional view Embodiment of an inventive Fuel injection valve 1.
  • the fuel injector 1 is in the form of a Brennscherinspritzvent ils 1 for Fuel injection systems of mixture compression, spark-ignited internal combustion engines running.
  • the Fuel injector 1 is suitable for direct Injecting fuel into a not shown Combustion chamber of an internal combustion engine.
  • the fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged.
  • the valve needle 3 is for example via a weld 41 in operative connection with a valve closing body 4, the arranged with a valve seat body 5 on a Valve seat surface 6 cooperates to a sealing seat.
  • Fuel injection valve 1 is in Embodiment to an inwardly opening Fuel injection valve 1, which over several Abspritzö Anlagenen 7 has, at least one for Axis of the valve seat body 5 concentric circle are arranged.
  • the nozzle body 2 is by a seal 8 against a Outer pole 9 acting as an actuator for the valve needle 3 Magnetic coil 10 sealed.
  • the magnetic coil 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic coil 10th is applied.
  • the inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from.
  • the magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current.
  • the plug contact 17 is surrounded by a plastic sheath 18, the Inner pole 13 may be molded.
  • the valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15.
  • An the other side of the dial 15 is a Anchor 20. This is about a first flange 21st non-positively connected to the valve needle 3 in conjunction, which by a weld 22 with the first flange 21 connected is.
  • On the first flange 21 is supported Return spring 23 from which in the present design of Fuel injection valve 1 by a sleeve 24 Bias is brought.
  • a second flange 31st Downstream of the armature 20 is a second flange 31st arranged, which serves as a lower anchor stop. He is over a weld 33 frictionally with the valve needle. 3 connected. Between the armature 20 and the second flange 31 is an elastic intermediate ring 32 for damping Anchor bouncers when closing the fuel injector 1 arranged.
  • the armature 20 and the Valve seat body 5 extend fuel channels 30a to 30c.
  • the fuel is supplied via a central fuel supply 16 supplied and filtered by a filter element 25.
  • the Fuel injection valve 1 is opposed by a seal 28 sealed a distribution line not shown.
  • the fuel injection valve 1 on one facing the combustion chamber of the internal combustion engine End face 35 of the valve seat body. 5 a groove-like Surface structure 34, which is different from the on at least one circuit arranged spray openings 7 extends radially outward.
  • a groove-like Surface structure 34 becomes fuel, which during of the injection process at the tip of the Fuel injection valve 1 precipitates, of the Abspritzö réelleen 7 transported away, so that the Coking tendency of the ejection openings 7 is reduced, whereby malfunctions of the fuel injection valve 1 by clogging the spray openings 7 and a Inadmissible reduction of fuel flow can be prevented.
  • the measures according to the invention are in Figs. 2A and 2B shown in more detail and in the Description explained.
  • the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 on the first flange 21 from the inner pole thirteenth from, causing the valve needle 3 against the stroke direction emotional. As a result, the valve closing body 4 is placed on the Valve seat surface 6 and the fuel injection valve. 1 will be closed. The armature 20 sits on the through the second flange 31 formed anchor stop.
  • Figs. 2A and 2B show in an enlarged schematic Top view of the discharge-side end of the in Fig. 1st illustrated fuel injection valve 1 two Embodiments of the inventive measures.
  • valve 1 has the fuel injection valve 1 in the region of Valve seat body 5 at a combustion chamber of the Internal combustion engine facing end face 35, the preferably curved conically or dome-shaped outward is, over a groove-like surface structure 34 which for removal from itself in the area of the ejection openings 7 serves precipitating fuel.
  • the coking of the ejection openings 7 can be reduced become. Since the diameter of the ejection openings 7 is typically about 100 microns, the risk that the Clogging holes 7 clog with coking over time and thus the flow rate impermissibly restricted becomes, relatively large. This is especially due to the high Temperatures when igniting the in the combustion chamber injected mixture cloud conditionally, as a result Components of the fuel at the top of the Deposit fuel injector 1.
  • the groove-like surface structure 34 may in Exit region of the ejection openings 7 remaining Fuel be removed, so that the Spray holes 7 not by coking residue can grow up.
  • Fig. 2A shows a first embodiment of groove-like surface structure 34.
  • the number of Spray openings 7 is present Embodiment six. You are on one to one Center axis of the fuel injection valve 1 and / or the Valve seat body 5 concentric circle arranged. From each of the ejection openings 7 assumes a groove 36, the a radially from the respective ejection opening 7 to the outside directed directional component has.
  • the grooves 36 are here more or less bent to an optimum Removal of fuel, located in the area of Spray holes 7 reflected down to ensure. Alternatively, it is possible to reduce the Manufacturing effort to reduce the number of grooves 36 so that, for example, only every second spray opening 7 with a groove 36 is in communication.
  • the grooves 36 may have any cross-section, wherein a U-shaped cross-section flow and production technology is the cheapest.
  • the cross section can For example, to the radially outer ends 38 of Flatten grooves 36; furthermore, the ends 38 can also be widened.
  • the production of the grooves 36 takes place for example, by turning during manufacture of the Valve seat body 5. Also a subsequent production on chemical way, for example by etching, is possible.
  • Fig. 2B shows in the same view as Fig. 2A, a second Embodiment of an inventively designed Valve seat body 5 of a fuel injection valve 1.
  • the fuel injection valve 1 six spray openings 7, which also on a Are arranged circle.
  • a single groove 37 which emanates from only one spray opening 7 and helical so extends radially outward that all Spray openings 7 radially within the single groove 37th lie.
  • Spray openings 7 on a helical line to arrange, which parallel to the helical Single groove 37 runs.
  • the single groove 37 must have the ejection openings 7 at least once completely circulated, so that the removal of fuel is guaranteed by all spray openings 7.
  • the single groove 37 in the Production of the valve seat body 5 made by turning or subsequently by chemical or mechanical means be introduced.
  • As a possible cross-sectional shape offers also a U-shaped cross-section possibly with widened and / or flattened end 38 at.
  • the invention is not limited to those shown Embodiments limited and for any Number of spray openings 7, which in any way at the discharge end of the fuel injection valve. 1 can be arranged for any number of grooves 36 and for any construction of Fuel injectors 1 applicable.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Mechanical Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Electromagnetism (AREA)
  • Fuel-Injection Apparatus (AREA)

Abstract

A fuel injector (1) for the direct injection of fuel into the combustion chamber of an internal combustion engines includes an actuator (10), a valve needle (3), which is able to be activated by the actuator (10) to actuate a valve-closure member (4), which forms a sealing seat together with a valve-seat surface (6) formed on a valve-seat member (5); and has a plurality of spray-discharge orifices (7) formed in the valve-seat member (5). A groove-type surface structure (34) is formed at an end face (35) of the valve-seat member (5) facing the combustion chamber.

Description

Stand der TechnikState of the art

Die Erfindung geht aus von einem Brennstoffeinspritzventil nach der Gattung des Anspruchs 1.The invention is based on a fuel injection valve according to the preamble of claim 1.

Aus der DE 198 04 463 A1 ist ein Brennstoffeinspritzsystem für eine gemischverdichtende, fremdgezündete Brennkraftmaschine bekannt, welches ein Brennstoffeinspritzventil umfaßt, das Brennstoff in einen von einer Kolben-/Zylinderkonstruktion gebildeten Brennraum einspritzt, und mit einer in den Brennraum ragenden Zündkerze versehen ist. Das Brennstoffeinspritzventil ist mit mindestens einer Reihe über den Umfang des Brennstoffeinspritzventils verteilt angeordneten Abspritzöffnungen versehen. Durch eine gezielte Einspritzung von Brennstoff über die Abspritzöffnungen wird eine strahlgeführtes Brennverfahren durch Bildung einer Gemischwolke mit mindestens einem Strahl realisiert.From DE 198 04 463 A1 is a fuel injection system for a mixture-compacting, spark-ignited Internal combustion engine is known which a Fuel injector includes the fuel in one combustion chamber formed by a piston / cylinder construction injected, and with a protruding into the combustion chamber Spark plug is provided. The fuel injection valve is with at least one row over the circumference of the Fuel injector arranged distributed Spray openings provided. Through a targeted injection of fuel over the spray orifices becomes one beam-guided combustion process by forming a Mixture cloud realized with at least one jet.

Nachteilig an dem aus der obengenannten Druckschrift bekannten Brennstoffeinspritzventil ist insbesondere die Verkokung der Abspritzöffnungen, welche dadurch verstopfen und den Durchfluß durch das Brennstoffeinspritzventil unzulässig stark vermindern. Dies führt zu Fehlfunktionen der Brennkraftmaschine. A disadvantage of the above-mentioned document known fuel injection valve is in particular the Coking of the ejection openings, which thereby clog and the flow through the fuel injector diminish impermissibly. This leads to malfunctions the internal combustion engine.

DE 199 11 928 A1 zeigt ein Einspritzventil für eine Brennkraftmaschine. Das Brennstoffeinspritzventil hat einen Ventilkörper, Einspritzöffnungen und einen Brennstoffspeicher auf der stromabwärtigen Seite eines Stiftabschnitts des Ventilkörpers. Eine Öffnung auf der Außenseite der Einspritzöfnung hat eine Breite, die allgemein größer ist, als eine Weite davon, wobei die Breite der Einspritzöffnung allmählich einwärts abnimmt, so daß der Brennstoff in der Richtung der Breite mit einem vorbestimmten Winkel eingespritzt wird. Die Weite der Einspritzöffnung in Einspritzrichtung des Brennstoffs innerhalb des vorbestimmten Winkels in der Breitenrichtung ist im wesentlichen gleichmäßig. Durchgangslöcher sind an dem Mittelabschnitt bzw. an den Seiten in der Breitenrichtung der Einspritzöffnung ausgebildet. Die Durchgangslöcher sind mit dem Brennstoffspeicher verbunden ist und haben eine Weite, die größer ist, als die Weite der Einspritzöffnung. DE 199 11 928 A1 shows an injection valve for a Internal combustion engine. The fuel injector has a valve body, injection ports and a Fuel storage on the downstream side of a Pin section of the valve body. An opening on the Outside of the injection hole has a width, the is generally larger than a width thereof, with the Width of the injection opening decreases gradually inwards, so that the fuel in the direction of the width with a predetermined angle is injected. The vastness of Injection opening in the direction of injection of the fuel within the predetermined angle in the width direction is essentially uniform. Through holes are on the middle section or on the sides in the Width direction of the injection port formed. The Through holes are connected to the fuel storage is and has a width that is greater than the width the injection port.

Vorteile der ErfindungAdvantages of the invention

Das erfindungsgemäße Brennstoffeinspritzventil mit den Merkmalen des Anspruchs 1 hat demgegenüber den Vorteil, daß an einer dem Brennraum der Brennkraftmaschine zugewandten Stirnseite des Ventilsitzkörpers des Brennstoffeinspritzventils eine rillenartige Oberflächenstruktur ausgebildet ist, welche verhindert, daß sich Brennstoff im Bereich der Abspritzöffnungen niederschlagen kann, wodurch ein Zuwachsen der Abspritzöffnungen durch Verkokungsrückstände vermieden wird.The fuel injection valve according to the invention with the Features of claim 1 has In contrast, the advantage that at one of the combustion chamber of Internal combustion engine facing front side of Valve seat body of the fuel injection valve a groove-like surface structure is formed, which prevents fuel in the area of Abspritzöffnungen can knock down, causing a zuwachsen the ejection openings avoided by coking residues becomes.

Durch die in den Unteransprüchen aufgeführten Maßnahmen sind vorteilhafte Weiterbildungen des im Hauptanspruch angegebenen Brennstoffeinspritzventils möglich.By the measures listed in the dependent claims are advantageous developments of the main claim specified fuel injector possible.

Von Vorteil ist insbesondere, daß die Anzahl der Rillen beliebig ist und von einer Einzelrille, welche von einer beliebigen Abspritzöffnung ausgeht, bis zu einer Anzahl ansteigen kann, welche gleich der Anzahl der Abspritzöffnungen ist.It is particularly advantageous that the number of grooves is arbitrary and of a single groove, which of a Any injection opening emanates, up to a number may increase, which is equal to the number of Spray openings is.

Vorteilhafterweise kann die rillenartige Oberflächenstruktur gleichzeitig mit dem Ventilsitzkörper hergestellt oder nachträglich in diesen eingebracht werden.Advantageously, the groove-like surface structure produced simultaneously with the valve seat body or be subsequently introduced into this.

Weiterhin ist von Vorteil, daß die rillenartige Oberflächenstruktur in einfacher und kostengünstiger Weise mittels mechanischer Bearbeitung, wie z. B. Drehen, oder mittels chemischer Bearbeitung, wie z. B. Ätzen, herstellbar ist.Furthermore, it is advantageous that the groove-like Surface structure in a simple and cost-effective manner by mechanical processing, such as. B. turning, or by chemical treatment, such as. As etching, can be produced is.

Zeichnungdrawing

Ausführungsbeispiele der Erfindung sind in der Zeichnung vereinfacht dargestellt und in der nachfolgenden Beschreibung näher erläutert. Es zeigen:

Fig. 1
einen schematischen Schnitt durch ein erstes Ausführungsbeispiel eines erfindungsgemäßen Brennstoffeinspritzventils in einer Gesamtansicht;
Fig. 2A
eine vergrößerte schematische Aufsicht auf ein erstes Ausführungsbeispiel eines mit den erfindungsgemäßen Maßnahmen ausgestalteten Ventilsitzkörpers des in Fig. 1 dargestellten Brennstoffeinspritzventils; und
Fig. 2B
eine vergrößerte schematische Aufsicht auf ein zweites Ausführungsbeispiel eines mit den erfindungsgemäßen Maßnahmen ausgestalteten Ventilsitzkörpers des in Fig. 1 dargestellten Brennstoffeinspritzventils.
Embodiments of the invention are shown in simplified form in the drawing and explained in more detail in the following description. Show it:
Fig. 1
a schematic section through a first embodiment of a fuel injection valve according to the invention in an overall view;
Fig. 2A
an enlarged schematic plan view of a first embodiment of an embodiment of the invention designed valve seat body of the fuel injection valve shown in Figure 1. and
Fig. 2B
an enlarged schematic plan view of a second embodiment of a configured with the inventive measures valve seat body of the fuel injection valve shown in Fig. 1.

Beschreibung der AusführungsbeispieleDescription of the embodiments

Fig. 1 zeigt in einer auszugsweisen Schnittdarstellung ein Ausführungsbeispiel eines erfindungsgemäßen Brennstoff einspritzventils 1. Das Brennstoffeinspritzventil 1 ist in der Form eines Brennstoffeinspritzvent ils 1 für Brennstoffeinspritzanlagen von gemischverdichtenden, fremdgezündeten Brennkraftmaschinen ausgeführt. Das Brennstoffeinspritzventil 1 eignet sich zum direkten Einspritzen von Brennstoff in einen nicht dargestellten Brennraum einer Brennkraftmaschine.Fig. 1 shows in an excerpted sectional view Embodiment of an inventive Fuel injection valve 1. The fuel injector 1 is in the form of a Brennstoffeinspritzvent ils 1 for Fuel injection systems of mixture compression, spark-ignited internal combustion engines running. The Fuel injector 1 is suitable for direct Injecting fuel into a not shown Combustion chamber of an internal combustion engine.

Das Brennstoffeinspritzventil 1 besteht aus einem Düsenkörper 2, in welchem eine Ventilnadel 3 angeordnet ist. Die ventilnadel 3 steht beispielsweise über eine Schweißnaht 41 in Wirkverbindung mit einem Ventilschließkörper 4, der mit einer auf einem Ventilsitzkörper 5 angeordneten Ventilsitzfläche 6 zu einem Dichtsitz zusammenwirkt. Bei dem Brennstoffeinspritzventil 1 handelt es sich im Ausführungsbeispiel um ein nach innen öffnendes Brennstoffeinspritzventil 1, welches über mehrere Abspritzöffnungen 7 verfügt, die auf zumindest einem zur Achse des Ventilsitzkörpers 5 konzentrischen Kreis angeordnet sind.The fuel injection valve 1 consists of a Nozzle body 2, in which a valve needle 3 is arranged. The valve needle 3 is for example via a weld 41 in operative connection with a valve closing body 4, the arranged with a valve seat body 5 on a Valve seat surface 6 cooperates to a sealing seat. In which Fuel injection valve 1 is in Embodiment to an inwardly opening Fuel injection valve 1, which over several Abspritzöffnungen 7 has, at least one for Axis of the valve seat body 5 concentric circle are arranged.

Der Düsenkörper 2 ist durch eine Dichtung 8 gegen einen Außenpol 9 einer als Aktor für die Ventilnadel 3 wirkenden Magnetspule 10 abgedichtet. Die Magnetspule 10 ist in einem Spulengehäuse 11 gekapselt und auf einen Spulenträger 12 gewickelt, welcher an einem Innenpol 13 der Magnetspule 10 anliegt. Der Innenpol 13 und der Außenpol 9 sind durch einen Spalt 26 voneinander getrennt und stützen sich auf einem Verbindungsbauteil 29 ab. Die Magnetspule 10 wird über eine Leitung 19 von einem über einen elektrischen Steckkontakt 17 zuführbaren elektrischen Strom erregt. Der Steckkontakt 17 ist von einer Kunststoffummantelung 18 umgeben, die am Innenpol 13 angespritzt sein kann.The nozzle body 2 is by a seal 8 against a Outer pole 9 acting as an actuator for the valve needle 3 Magnetic coil 10 sealed. The magnetic coil 10 is in one Coil housing 11 encapsulated and on a bobbin 12th wound, which at an inner pole 13 of the magnetic coil 10th is applied. The inner pole 13 and the outer pole 9 are connected by a Split 26 separated from each other and rely on a Connecting component 29 from. The magnetic coil 10 is connected via a Line 19 of a via an electrical plug contact 17th energized electric current. The plug contact 17 is surrounded by a plastic sheath 18, the Inner pole 13 may be molded.

Die Ventilnadel 3 ist in einer Ventilnadelführung 14 geführt, welche scheibenförmig ausgeführt ist. Zur Hubeinstellung dient eine zugepaarte Einstellscheibe 15. An der anderen Seite der Einstellscheibe 15 befindet sich ein Anker 20. Dieser steht über einen ersten Flansch 21 kraftschlüssig mit der Ventilnadel 3 in Verbindung, welche durch eine Schweißnaht 22 mit dem ersten Flansch 21 verbunden ist. Auf dem ersten Flansch 21 stützt sich eine Rückstellfeder 23 ab, welche in der vorliegenden Bauform des Brennstoffeinspritzventils 1 durch eine Hülse 24 auf Vorspannung gebracht wird.The valve needle 3 is in a valve needle guide fourteenth guided, which is designed disk-shaped. to Stroke adjustment is a paired shim 15. An the other side of the dial 15 is a Anchor 20. This is about a first flange 21st non-positively connected to the valve needle 3 in conjunction, which by a weld 22 with the first flange 21 connected is. On the first flange 21 is supported Return spring 23 from which in the present design of Fuel injection valve 1 by a sleeve 24 Bias is brought.

Abströmseitig des Ankers 20 ist ein zweiter Flansch 31 angeordnet, der als unterer Ankeranschlag dient. Er ist über eine Schweißnaht 33 kraftschlüssig mit der Ventilnadel 3 verbunden. Zwischen dem Anker 20 und dem zweiten Flansch 31 ist ein elastischer Zwischenring 32 zur Dämpfung von Ankerprellern beim Schließen des Brennstoffeinspritzventils 1 angeordnet.Downstream of the armature 20 is a second flange 31st arranged, which serves as a lower anchor stop. He is over a weld 33 frictionally with the valve needle. 3 connected. Between the armature 20 and the second flange 31 is an elastic intermediate ring 32 for damping Anchor bouncers when closing the fuel injector 1 arranged.

In der Ventilnadelführung 14, im Anker 20 und am Ventilsitzkörper 5 verlaufen Brennstoffkanäle 30a bis 30c. Der Brennstoff -wird über eine zentrale Brennstoffzufuhr 16 zugeführt und durch ein Filterelement 25 gefiltert. Das Brennstoffeinspritzventil 1 ist durch eine Dichtung 28 gegen eine nicht weiter dargestellte Verteilerleitung abgedichtet.In the valve needle guide 14, the armature 20 and the Valve seat body 5 extend fuel channels 30a to 30c. The fuel is supplied via a central fuel supply 16 supplied and filtered by a filter element 25. The Fuel injection valve 1 is opposed by a seal 28 sealed a distribution line not shown.

Erfindungsgemäß weist das Brennstoffeinspritzventil 1 an einer dem Brennraum der Brennkraftmaschine zugewandten Stirnseite 35 des Ventilsitzkörpers. 5 eine rillenartige Oberflächenstruktur 34 auf, welche sich von den auf zumindest einem Kreis angeordneten Abspritzöffnungen 7 radial nach außen erstreckt. Durch die rillenartige Oberflächenstruktur 34 wird Brennstoff, welcher sich während des Einspritzvorgangs an der Spitzes des Brennstoffeinspritzventils 1 niederschlägt, von den Abspritzöffnungen 7 wegtransportiert, so daß die Verkokungsneigung der Abspritzöffnungen 7 vermindert wird, wodurch Fehlfunktionen des Brennstoffeinspritzventils 1 durch Verstopfen der Abspritzöffnungen 7 und einer unzulässigen Verringerung des Brennstoffdurchflusses vorgebeugt werden kann. Die erfindungsgemäßen Maßnahmen sind in den Fig. 2A und 2B näher dargestellt und in der Beschreibung erläutert.According to the invention, the fuel injection valve 1 on one facing the combustion chamber of the internal combustion engine End face 35 of the valve seat body. 5 a groove-like Surface structure 34, which is different from the on at least one circuit arranged spray openings 7 extends radially outward. Through the groove-like Surface structure 34 becomes fuel, which during of the injection process at the tip of the Fuel injection valve 1 precipitates, of the Abspritzöffnungen 7 transported away, so that the Coking tendency of the ejection openings 7 is reduced, whereby malfunctions of the fuel injection valve 1 by clogging the spray openings 7 and a Inadmissible reduction of fuel flow can be prevented. The measures according to the invention are in Figs. 2A and 2B shown in more detail and in the Description explained.

Im Ruhezustand des Brennstoffeinspritzventils 1 wird der erste Flansch 21 an der Ventilnadel 3 von der Rückstellfeder 23 entgegen einer Hubrichtung so beaufschlagt, daß der Ventilschließkörper 4 am Ventilsitz 6 in dichtender Anlage gehalten wird. Der Anker 20 liegt auf dem Zwischenring 32 auf, der sich auf dem zweiten Flansch 31 abstützt. Bei Erregung der Magnetspule 10 baut diese ein Magnetfeld auf, welches den Anker 20 entgegen der Federkraft der Rückstellfeder 23 in Hubrichtung bewegt. Dabei nimmt der Anker 20 den ersten Flansch 21, welcher mit der Ventilnadel 3 verschweißt ist, und damit die Ventilnadel 3 ebenfalls in Hubrichtung mit. Der mit der Ventilnadel 3 in Wirkverbindung stehende Ventilschließkörper 4 hebt von der Ventilsitzfläche 6 ab, wodurch der Brennstoff an den Abspritzöffnungen 7 abgespritzt wird. In the idle state of the fuel injection valve 1 is the first flange 21 on the valve needle 3 of the return spring 23 acted against a stroke direction so that the Valve-closing body 4 on the valve seat 6 in sealing contact is held. The armature 20 is located on the intermediate ring 32nd on, which is supported on the second flange 31. at Excitation of the magnetic coil 10 builds this a magnetic field, which the armature 20 against the spring force of Return spring 23 moves in the stroke direction. It takes the Anchor 20, the first flange 21, which with the valve needle 3 is welded, and thus the valve needle 3 also in Lifting direction with. The with the valve needle 3 in operative connection standing valve closing body 4 lifts from the valve seat surface 6, whereby the fuel at the ejection openings. 7 is hosed.

Wird der Spulenstrom abgeschaltet, fällt der Anker 20 nach genügendem Abbau des Magnetfeldes durch den Druck der Rückstellfeder 23 auf den ersten Flansch 21 vom Innenpol 13 ab, wodurch sich die Ventilnadel 3 entgegen der Hubrichtung bewegt. Dadurch setzt der Ventilschließkörper 4 auf der Ventilsitzfläche 6 auf und das Brennstoffeinspritzventil 1 wird geschlossen. Der Anker 20 setzt auf dem durch den zweiten Flansch 31 gebildeten Ankeranschlag auf.If the coil current is turned off, the armature 20 drops sufficient reduction of the magnetic field by the pressure of the Return spring 23 on the first flange 21 from the inner pole thirteenth from, causing the valve needle 3 against the stroke direction emotional. As a result, the valve closing body 4 is placed on the Valve seat surface 6 and the fuel injection valve. 1 will be closed. The armature 20 sits on the through the second flange 31 formed anchor stop.

Fig. 2A und 2B zeigen in einer vergrößerten schematischen Aufsicht auf das abspritzseitige Ende des in Fig. 1 dargestellten Brennstoffeinspritzventils 1 zwei Ausführungsbeispiele der erfindungsgemäßen Maßnahmen.Figs. 2A and 2B show in an enlarged schematic Top view of the discharge-side end of the in Fig. 1st illustrated fuel injection valve 1 two Embodiments of the inventive measures.

Wie bereits in der Beschreibung zu Fig. 1 kurz angesprochen, verfügt das Brennstoffeinspritzventil 1 im Bereich des Ventilsitzkörpers 5 an einer dem Brennraum der Brennkraftmaschine zugewandten Stirnseite 35, die vorzugsweise konisch oder kalottenförmig nach außen gewölbt ist, über eine rillenartige Oberflächenstruktur 34, welche zum Abtransport von sich im Bereich der Abspritzöffnungen 7 niederschlagenden Brennstoffs dient.As already briefly mentioned in the description of FIG. 1, has the fuel injection valve 1 in the region of Valve seat body 5 at a combustion chamber of the Internal combustion engine facing end face 35, the preferably curved conically or dome-shaped outward is, over a groove-like surface structure 34 which for removal from itself in the area of the ejection openings 7 serves precipitating fuel.

Durch die erfindungsgemäße rillenartige Oberflächenstruktur 34 kann die Verkokung der Abspritzöffnungen 7 reduziert werden. Da der Durchmesser der Abspritzöffnungen 7 typischerweise ca. 100 µm beträgt, ist die Gefahr, daß die Abspritzöffnungen 7 durch Verkokung mit der Zeit verstopfen und somit die Durchflußmenge unzulässig stark eingeschränkt wird, relativ groß. Dies ist insbesondere durch die hohen Temperaturen beim Durchzünden der in den Brennraum eingespritzten Gemischwolke bedingt, da sich dadurch Bestandteile des Brennstoffs an der Spitze des Brennstoffeinspritzventils 1 absetzen. Durch die Anbringung der rillenartigen Oberflächenstruktur 34 kann im Austrittsbereich der Abspritzöffnungen 7 zurückbleibender Brennstoff abtransportiert werden, so daß die Abspritzöffnungen 7 nicht durch Verkokungsrückstände zuwachsen können. By the groove-like surface structure according to the invention 34, the coking of the ejection openings 7 can be reduced become. Since the diameter of the ejection openings 7 is typically about 100 microns, the risk that the Clogging holes 7 clog with coking over time and thus the flow rate impermissibly restricted becomes, relatively large. This is especially due to the high Temperatures when igniting the in the combustion chamber injected mixture cloud conditionally, as a result Components of the fuel at the top of the Deposit fuel injector 1. By attachment The groove-like surface structure 34 may in Exit region of the ejection openings 7 remaining Fuel be removed, so that the Spray holes 7 not by coking residue can grow up.

Fig. 2A zeigt ein erstes Ausführungsbeispiel der rillenartigen Oberflächenstruktur 34. Die Anzahl der Abspritzöffnungen 7 beträgt im vorliegenden Ausführungsbeispiel sechs. Sie sind auf einem zu einer Mittelachse des Brennstoffeinspritzventils 1 und/oder des Ventilsitzkörpers 5 konzentrischen Kreis angeordnet. Von jeder der Abspritzöffnungen 7 geht eine Rille 36 aus, die eine radial von der jeweiligen Abspritzöffnung 7 nach außen gerichtete Richtungskomponente hat. Die Rillen 36 sind dabei mehr oder weniger stark gebogen, um einen optimalen Abtransport von Brennstoff, der sich im Bereich der Abspritzöffnungen 7 niedergeschlagen hat, zu gewährleisten. Alternativ ist es möglich, zur Reduzierung des Fertigungsaufwands die Anzahl der Rillen 36 zu reduzieren, so daß beispielsweise nur jede zweite Abspritzöffnung 7 mit einer Rille 36 in Verbindung steht.Fig. 2A shows a first embodiment of groove-like surface structure 34. The number of Spray openings 7 is present Embodiment six. You are on one to one Center axis of the fuel injection valve 1 and / or the Valve seat body 5 concentric circle arranged. From each of the ejection openings 7 assumes a groove 36, the a radially from the respective ejection opening 7 to the outside directed directional component has. The grooves 36 are here more or less bent to an optimum Removal of fuel, located in the area of Spray holes 7 reflected down to ensure. Alternatively, it is possible to reduce the Manufacturing effort to reduce the number of grooves 36 so that, for example, only every second spray opening 7 with a groove 36 is in communication.

Die Rillen 36 können einen beliebigen Querschnitt aufweisen, wobei ein U-förmiger Querschnitt strömungs- und fertigungstechnisch am günstigsten ist. Der Querschnitt kann sich beispielsweise auch zu den radial äußeren Enden 38 der Rillen 36 hin abflachen; weiterhin können die Enden 38 auch aufgeweitet sein. Die Herstellung der Rillen 36 erfolgt beispielsweise durch Drehen während der Herstellung des Ventilsitzkörpers 5. Auch eine nachträgliche Herstellung auf chemischem Weg, beispielsweise durch Ätzen, ist möglich.The grooves 36 may have any cross-section, wherein a U-shaped cross-section flow and production technology is the cheapest. The cross section can For example, to the radially outer ends 38 of Flatten grooves 36; furthermore, the ends 38 can also be widened. The production of the grooves 36 takes place for example, by turning during manufacture of the Valve seat body 5. Also a subsequent production on chemical way, for example by etching, is possible.

Fig. 2B zeigt in gleicher Ansicht wie Fig. 2A ein zweites Ausführungsbeispiel eines erfindungsgemäß ausgestalteten Ventilsitzkörpers 5 eines Brennstoffeinspritzventils 1.Fig. 2B shows in the same view as Fig. 2A, a second Embodiment of an inventively designed Valve seat body 5 of a fuel injection valve 1.

Wie in dem in Fig. 2A dargestellten ersten Ausführungsbeispiel weist das Brennstoffeinspritzventil 1 sechs Abspritzöffnungen 7 auf, welche ebenfalls auf einem Kreis angeordnet sind. Zum Abtransport von Brennstoff dient im vorliegenden zweiten Ausführungsbeispiel eine Einzelrille 37, welche von nur einer Abspritzöffnung 7 ausgeht und schneckenförmig so radial nach außen verläuft, daß alle Abspritzöffnungen 7 radial innerhalb der Einzelrille 37 liegen. Alternativ wäre es auch möglich, die Abspritzöffnungen 7 auf einer schneckenförmigen Linie anzuordnen, welche parallel zu der schneckenförmigen Einzelrille 37 verläuft.As in the first shown in Fig. 2A Embodiment, the fuel injection valve 1 six spray openings 7, which also on a Are arranged circle. For the removal of fuel used in the present second embodiment, a single groove 37, which emanates from only one spray opening 7 and helical so extends radially outward that all Spray openings 7 radially within the single groove 37th lie. Alternatively, it would also be possible to Spray openings 7 on a helical line to arrange, which parallel to the helical Single groove 37 runs.

Die Einzelrille 37 muß die Abspritzöffnungen 7 zumindest einmal ganz umlaufen, damit der Abtransport von Brennstoff von allen Abspritzöffnungen 7 gewährleistet ist. Wie im ersten Ausführungsbeispiel kann die Einzelrille 37 bei der Herstellung des Ventilsitzkörpers 5 durch Drehen hergestellt oder nachträglich auf chemischem oder mechanischem Weg eingebracht werden. Als mögliche Querschnittsform bietet sich ebenfalls ein U-förmiger Querschnitt evtl. mit verbreitertem und/oder abgeflachten Ende 38 an.The single groove 37 must have the ejection openings 7 at least once completely circulated, so that the removal of fuel is guaranteed by all spray openings 7. Like in the first embodiment, the single groove 37 in the Production of the valve seat body 5 made by turning or subsequently by chemical or mechanical means be introduced. As a possible cross-sectional shape offers also a U-shaped cross-section possibly with widened and / or flattened end 38 at.

Die Erfindung ist nicht auf die dargestellten Ausführungsbeispiele beschränkt und für eine beliebige Anzahl von Abspritzöffnungen 7, welche in beliebiger Weise am abspritzseitigen Ende des Brennstoffeinspritzventils 1 angeordnet sein können, für eine beliebige Anzahl von Rillen 36 sowie für beliebige Bauweisen von Brennstoffeinspritzventilen 1 anwendbar.The invention is not limited to those shown Embodiments limited and for any Number of spray openings 7, which in any way at the discharge end of the fuel injection valve. 1 can be arranged for any number of grooves 36 and for any construction of Fuel injectors 1 applicable.

Claims (7)

  1. Fuel injection valve (1) for directly injecting fuel into the combustion chamber of internal combustion engines having an actuator (10), a valve needle (3) which can be activated by the actuator (10) in order to activate a valve closing body (4) which, together with a valve seat face (6) provided on a valve seat body (5), forms a sealing seat, and a plurality of ejection openings (7) which are provided in the valve seat body (5), wherein groove-like surface structure (34) is provided on an end side (35), facing the combustion chamber, of the valve seat body (5), characterized in that the groove-like surface structure (34) is provided in the form of grooves (36) which are connected to the ejection openings (7), and in that the grooves (36) are bent.
  2. Fuel injection valve according to Claim 1, characterized in that the grooves (36) have a radially outwardly directed directional component.
  3. Fuel injection valve according to one of Claims 1 and 2, characterized in that the number of grooves (36) is less than or equal to the number of ejection openings (7).
  4. Fuel injection valve (1) for directly injecting fuel into the combustion chamber of internal combustion engines having an actuator (10), a valve needle (3) which can be activated by the actuator (10) in order to activate a valve closing body (4) which, together with a valve seat face (6) provided on a valve seat body (5), forms a sealing seat, and a plurality of ejection openings (7) which are provided in the valve seat body (5), wherein a groove-like surface structure (35) is provided on an end side (35), facing the combustion chamber, of the valve seat body (5), characterized in that the groove-like surface structure (34) is provided in the form of an individual groove (37) which is connected to just one ejection opening (7), and in that the individual groove (37) is bent.
  5. Fuel injection valve according to Claim 4, characterized in that the individual groove (37) extends radially outwards in a helical shape.
  6. Fuel injection valve according to Claim 5, characterized in that the individual groove (37) extends on the valve seat body (5) in such a way that the ejection openings (7) open within the individual groove (37).
  7. Fuel injection valve according to one of Claims 1 to 6, characterized in that the groove-like surface structure (34) is manufactured by turning or etching.
EP02800535A 2001-10-02 2002-09-07 Fuel injection valve Expired - Lifetime EP1434941B1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE10148597 2001-10-02
DE10148597A DE10148597A1 (en) 2001-10-02 2001-10-02 Fuel injector
PCT/DE2002/003338 WO2003031806A1 (en) 2001-10-02 2002-09-07 Fuel injection valve

Publications (2)

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EP1434941A1 EP1434941A1 (en) 2004-07-07
EP1434941B1 true EP1434941B1 (en) 2005-12-21

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EP02800535A Expired - Lifetime EP1434941B1 (en) 2001-10-02 2002-09-07 Fuel injection valve

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US (1) US20040129806A1 (en)
EP (1) EP1434941B1 (en)
JP (1) JP2005504923A (en)
AT (1) ATE313711T1 (en)
DE (2) DE10148597A1 (en)
WO (1) WO2003031806A1 (en)

Families Citing this family (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10204656A1 (en) * 2002-02-05 2003-09-25 Bosch Gmbh Robert Fuel injector
US7191961B2 (en) * 2002-11-29 2007-03-20 Denso Corporation Injection hole plate and fuel injection apparatus having the same
US7168637B2 (en) * 2004-11-05 2007-01-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7137577B2 (en) * 2004-11-05 2006-11-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7124963B2 (en) * 2004-11-05 2006-10-24 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7051957B1 (en) * 2004-11-05 2006-05-30 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7438241B2 (en) * 2004-11-05 2008-10-21 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7104475B2 (en) * 2004-11-05 2006-09-12 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
US7185831B2 (en) * 2004-11-05 2007-03-06 Ford Motor Company Low pressure fuel injector nozzle
US7198207B2 (en) * 2004-11-05 2007-04-03 Visteon Global Technologies, Inc. Low pressure fuel injector nozzle
DE102009054399B4 (en) 2009-11-24 2018-03-29 Continental Automotive Gmbh Nozzle assembly for an injection valve and injection valve
DE102009060844A1 (en) * 2009-12-29 2011-06-30 Friedrichs, Arno, 95326 Method for producing a channeled fuel injection element and fuel injection element
JP5395007B2 (en) * 2010-07-22 2014-01-22 日立オートモティブシステムズ株式会社 Fuel injection valve and vehicle internal combustion engine equipped with the same
JP6022906B2 (en) * 2012-11-22 2016-11-09 株式会社日本自動車部品総合研究所 Fuel injection valve
EP3117091A4 (en) 2014-03-10 2017-03-29 G.W. Lisk Company, Inc. Injector valve
US9790906B2 (en) 2014-08-15 2017-10-17 Continental Automotive Systems, Inc. High pressure gasoline injector seat to reduce particle emissions
CN106150817A (en) * 2015-05-11 2016-11-23 朱海燕 Hybrid power automobile
CN106150816A (en) * 2015-05-11 2016-11-23 朱海燕 Hybrid power system for automobile
CN106150814A (en) * 2015-05-11 2016-11-23 朱海燕 Carbon deposition prevention oil sprayer
CN105180948A (en) * 2015-08-24 2015-12-23 吴红平 Work method of navigation system capable of preventing pileup
KR101588017B1 (en) * 2015-08-31 2016-01-25 이구환 Dispenser-nozzle for high-pressure injection

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07208294A (en) * 1993-12-31 1995-08-08 Keihin Seiki Mfg Co Ltd Electromagnetic fuel injection valve
DE19911928A1 (en) * 1998-03-19 1999-09-30 Toyota Motor Co Ltd Injection valve for an internal combustion engine

Family Cites Families (11)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2610927C2 (en) * 1976-03-16 1983-01-27 Institut für Motorenbau Prof. Huber e.V., 8000 München Injection nozzle for injecting fuel into the combustion chamber of an internal combustion engine
US4101074A (en) * 1976-06-17 1978-07-18 The Bendix Corporation Fuel inlet assembly for a fuel injection valve
DE3121572A1 (en) * 1981-05-30 1982-12-16 Robert Bosch Gmbh, 7000 Stuttgart "INJECTION VALVE"
JPH0417769A (en) * 1990-05-09 1992-01-22 Hino Motors Ltd Fuel injection nozzle
JPH08232813A (en) * 1995-02-27 1996-09-10 Aisan Ind Co Ltd Injector
JP3478920B2 (en) * 1996-02-14 2003-12-15 株式会社日立製作所 In-cylinder fuel injection device and internal combustion engine equipped with the same
DE19726727A1 (en) * 1997-06-24 1999-01-07 Bosch Gmbh Robert Fuel injector or fuel injector
JP3896653B2 (en) * 1997-10-08 2007-03-22 トヨタ自動車株式会社 Fuel injection valve for internal combustion engine
DE19804463B4 (en) 1998-02-05 2006-06-14 Daimlerchrysler Ag Fuel injection system for gasoline engines
US6029913A (en) * 1998-09-01 2000-02-29 Cummins Engine Company, Inc. Swirl tip injector nozzle
DE10118163B4 (en) * 2001-04-11 2007-04-19 Robert Bosch Gmbh Fuel injector

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH07208294A (en) * 1993-12-31 1995-08-08 Keihin Seiki Mfg Co Ltd Electromagnetic fuel injection valve
DE19911928A1 (en) * 1998-03-19 1999-09-30 Toyota Motor Co Ltd Injection valve for an internal combustion engine

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US20040129806A1 (en) 2004-07-08
EP1434941A1 (en) 2004-07-07
DE10148597A1 (en) 2003-08-21
ATE313711T1 (en) 2006-01-15
JP2005504923A (en) 2005-02-17
DE50205379D1 (en) 2006-01-26
WO2003031806A1 (en) 2003-04-17

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